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The Laboratory Notebook on Principles of Chemistry I | CHEM 1211, Lab Reports of Chemistry

Material Type: Lab; Class: Principles of Chemistry I; Subject: Chemistry; University: Clayton State University; Term: Fall 2005;

Typology: Lab Reports

Pre 2010

Uploaded on 08/04/2009

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The Laboratory Notebook
The laboratory notebook is a permanent record of activities carried out in the
laboratory. Each experiment that you conduct in this course must be written up, in detail,
in your laboratory notebook. Although the style of a notebook depends to some extent on
the author, there are certain guidelines that everyone should follow, particularly with
respect to the laboratory write-ups.
The first two pages of your laboratory notebook should be reserved for a Table of
Contents. Each experiment must be listed according to the title, the date on which it was
carried out, and the page on which the experiment can be found in the notebook. Most
laboratory notebooks come with the pages already numbered; however, if yours does not,
it will be necessary for you to number them.
During the first week of lab, the instructor will sign a page in your notebook to
help verify that this is the one and only notebook for your data.
Each time you perform an experiment in the laboratory, you will develop a write-
up (or report) in your lab notebook. It must include the information outlined below.
Title, Date, and Name
The title of the experiment and the date on which the experiment is performed
must appear at the beginning of each laboratory write-up. Your name, and the name of
any lab partners, must appear at the top of each page.
Objective
Each laboratory write-up must begin with an objective. The purpose of the
objective is to describe, in as few words as possible, what the experiment is about. It
should consist of two or three sentences stating the purpose of the experiment (What are
you trying to accomplish?) and briefly mention any concepts, equations, or theories
utilized.
Procedural Outline
The purpose of the Procedural Outline is to briefly summarize the steps involved
in carrying out the experiment. This is an outline; therefore, you should not copy the
directions as they appear in the lab manual. Instead, you should carefully read through the
experiment so that you are familiar with all aspects of the procedure. Then, generate an
outline so that you can perform the experiment without the aid of the manual. The more
conscientious you are about preparing for lab, the more efficient and effective you will be
in the laboratory.
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The Laboratory Notebook The laboratory notebook is a permanent record of activities carried out in the laboratory. Each experiment that you conduct in this course must be written up, in detail, in your laboratory notebook. Although the style of a notebook depends to some extent on the author, there are certain guidelines that everyone should follow, particularly with respect to the laboratory write-ups. The first two pages of your laboratory notebook should be reserved for a Table of Contents. Each experiment must be listed according to the title, the date on which it was carried out, and the page on which the experiment can be found in the notebook. Most laboratory notebooks come with the pages already numbered; however, if yours does not, it will be necessary for you to number them. During the first week of lab, the instructor will sign a page in your notebook to help verify that this is the one and only notebook for your data. Each time you perform an experiment in the laboratory, you will develop a write- up (or report) in your lab notebook. It must include the information outlined below. Title, Date, and Name The title of the experiment and the date on which the experiment is performed must appear at the beginning of each laboratory write-up. Your name, and the name of any lab partners, must appear at the top of each page. Objective Each laboratory write-up must begin with an objective. The purpose of the objective is to describe, in as few words as possible, what the experiment is about. It should consist of two or three sentences stating the purpose of the experiment (What are you trying to accomplish?) and briefly mention any concepts, equations, or theories utilized. Procedural Outline The purpose of the Procedural Outline is to briefly summarize the steps involved in carrying out the experiment. This is an outline; therefore, you should not copy the directions as they appear in the lab manual. Instead, you should carefully read through the experiment so that you are familiar with all aspects of the procedure. Then, generate an outline so that you can perform the experiment without the aid of the manual. The more conscientious you are about preparing for lab, the more efficient and effective you will be in the laboratory.

Data and Analysis The Data and Analysis section of the laboratory notebook is a detailed account of the actual experiment. This section will be completed during the laboratory period. However, it will save you time if you set up the format before coming to lab. Especially important are tables into which you will enter data. Data refers to any quantitative and/or qualitative observations made while performing the experiment. Quantitative observations are obtained through measurement, such as recording the temperature of a solution or measuring the mass of a solid. Qualitative observations provide non-numeric, descriptive information: What color was the solution? What happened to the temperature of the solution when the solid was added? When recording data in the laboratory notebook, there are several things you should keep in mind.

  1. A laboratory notebook should serve as a permanent record; therefore, all work must be done in pen, not pencil. If a mistake is made, simply draw a line through the error and write the correction below. No erasures or block-outs or white outs should occur.
  2. Be sure to record all data at the time it is obtained. Never rely on your memory to fill in the details; chances are you will have forgotten some, or all, of the information when you need it. Data should never be taken on scratch paper or paper towels. The notebook should include things such as: initial and final readings, tabulated data and calculations in a clear and legible manner. Units should be included with every number.
  3. Provide as much detail as possible. It is not uncommon for a seemingly trivial observation to become important later in the experiment. Be thorough!
  4. Organize your data in a straightforward manner. For example, if you are working with large amounts of data, consider using tables to organize that data. If there are several parts to the experiment, provide proper headings to set off each section. The more care you take in organizing your data, the easier it will be for you, and others, to interpret the results. The last part of any experiment is the analysis. It is here that you must interpret the data and summarize what was learned from the experiment. In most cases the lab manual will provide you with a series of questions to help in analyzing the data. You should support all your answers with a thorough, but concise, explanation. If calculations